germy environments. the hot zone includes the row in front of you, the row behind you, and all of these areas here. the tray table, the seat pocket. anywhere that's likely to have caught a sneeze. the airport, with those crowded ticket counters, tsa checkpoints and food courts is an even bigger petri dish for disease. no air filters there but plenty of coughs and sneezes. >> the best way to stay healthy is to keep your hands clean and for traveling that's a sanitizer. >> a single sneeze can produce 30,000 droplets that can spread as far as six feet. not exactly anyone's idea of spreading holiday cheer. david wright, abc news, los angeles. >> controversy for the california health exchange. covered california is reportedly sharing data with insurance acts without consumers' consent. the los angeles times said the state provided personal information to the agents when consumers researched coverage online. those consumers did not complete an application, nor did they ask to be contacted. tens of thousands of people are affected. >>> there is hopeful news on the blood cancer front.